Suitable design patterns [on hold]

I am investigating some design patterns. I wonder can someone help me to understand what pattern should be good to carry out a number of tasks to import documents in a database, for example:

1. Iterate folders and look for files
2. Validate CSV files in folders
3. Create multipage tiff based on info in CSV files
4. Store data and images in database
5. Delete files
6. etc.

Any suggestions?